1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb596acf7009389ca15bc7ed62cb5e5639f3bf5c154e525570ee548430c1ba546. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a557c3e2-c552-4a5c-aa4f-98b11c254bef.json and https://artists.proofprofile.net/proofs/artist/a557c3e2-c552-4a5c-aa4f-98b11c254bef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6c4699feec3271d99bf0163a5b3a96c79889852088b5da7f21079323c12578. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCQAL2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270bb776d5ef759bc69c744158172b1fb552834c77d462884dfb3f273a3f0c8b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKLOT2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b6abd2837bd2eff9942105b1a4fc696c645cc631bf4aac82ea8a8e90256acc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKLOT2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53da9a0ae51d6143d3a10136e962ee59545a86c422a550744fb53ce29f30288. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKLOT2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2e1171a84060e39d243d16496bb5bdc4e72a63c35952acbcdb3223ce98d9e7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCQAL2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf314095aa360fd7a26b58b3471e80beda778cdc2dc4cc4ee8f5d22e7ac58601b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2131664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2823c3ecc8a32e0bc6d99c7814170fa233fc0d115b8bce5ab2441bb42dbebbf6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ32006221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9885a2afa25bee5dc8285ca7590f954cec72a80e47f25beb1bc5a817a59ab58. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX6Y62400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0736c90378e986ab561edbc90fd4c534830f0fd6b70e691835cd85f31762cc56. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX6Y62400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056b1de93cb7e245ecb6463b08652be4d0316080b11f74d8b1ba363870b46546. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX6Y62400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbcf588d31069cf01ba96348c0ca71be658441a4aba3ce1b48ef992981d504e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX6Y62400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e50f880a907a7260ad2bc57038adafdb9d57c8cc404fa4dfc9d4c78b1b09747. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX6Y62400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b947efe55a886b30f57767bec146ea2d0b0371ce39911c98b43929b476fd7c4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX6Y62400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790c0fa0ea191b2276f6618507959d7fe4cacddf542e34f98f6d827955545872. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX6Y62400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cd657cbad8c1650b36d5991a924f80e22b727e179111288fa5e0cf670a7e92. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX6Y62400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b21a63d5511d1b35a08d288478158fb9beb9e8647618877863a214169fd5f71. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX6Y62400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf97b0f1856bace5c5ef8ceaf393da4c07a571594bc2323e92cb500151a3335. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC9PK2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70706b3024c81191754a7b5cbd60da9b4754391438469b3d06ee681bf4cc780b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC9PK2300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ed99adf3543875a0e2405ce6c3b63e40620b59c48641c736a6e46c39d04a81. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC9PK2300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051fa1af8c413998a3c18755812a4f4522e541d2a8ee36852a8705ab24d683c3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC9PK2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10127ce44c947b9172d234b1e525c8081f2b672daa2f896a62fcc058d7793e3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC9PK2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3079eb99da5e9a610de4d7c83559c0de8d0d615be428dbc8f05c718016fbdd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC9PK2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a3d2055c976596887bb089bc1af0f6307235494ad9c1f946eb13de0c893298. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC9PK2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2045653424591795c32288d854a591bff43b0f54504f9a11ebf292c3beff4aa2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC9PK2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5042be192dcba9382184fdf4a99ab1f24dcd32303bfe9cc41c1dc513f4a87d96. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC9PK2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8832b5669bbd8ccb6648acc791848dd6202487268cb23195c5eaed2f8c79dd8c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC9PK2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014694fd2865a1e0ff605d1de93eba7bde574103d8c83a787c110e18a28f3967. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC9PK2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685d516f17bca1643ba6fc1be7452061228b8cbe63634c7092e77fe972ffe16f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC9PK2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63208478b16246b16bd3ea2d480a73a80651a82a43079d95ec40b10e042d9f90. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC9PK2300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46123db5dfda2a794bbb5fd5ee9d0afbdd6762a1f93dd774bb2acc0c956274b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC9PK2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8fef60b8280f76a5baa244f930700b0223d0e599b7bb6992d64575eb9cf3df. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC9PK2300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7178dbd4ffdffd2718f823ab97dc3d8fad74fdc4d4b3dbec849b2449f1096d50. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKSKI2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06a8c556efea9fedb578ae85d587044d207b4c41ddf94aa50f6530eaead2b68. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKSKI2400015.